<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>ES7 新特性</title>
</head>
<body>
  <script>
    //includes 
    const mingzhu = ['西游记','三国演义','红楼梦','水浒传'];

    //判断
    console.log(mingzhu.includes('西游记'));
    console.log(mingzhu.includes('金瓶梅'));

    //**
    console.log(2 ** 10);
    console.log(Math.pow(2,10));
  </script>
</body>
</html>